Popular Products
Zinc oxidepuriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥99%(KT)Out of Stock Item #: Z431818View ProductPricing & Pack SizesTechnical Identifiers
- Synonyms
- Azo-77TT | Flores de zinci | Vandem VPC | Zinc Oxide Dispersion | Zinc oxide, Puratronic | Zincite | Zinc oxide, Nano...
Zinc sulfate heptahydratePh.Eur. ? European Pharmacopoeia grade — conforms to Ph.Eur. monographs across EU member states. Use for pharmaceutical work needing European compendial compliance. puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥99.5%In Stock Item #: Z433478View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- zinc;sulfate;heptahydrate
- SMILES
- O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[Zn+2]
- InChIKey
- RZLVQBNCHSJZPX-UHFFFAOYSA-L
- InChI
- 1S/H2O4S.7H2O.Zn/c1-5(2,3)4;;;;;;;;/h(H2,1,2,3,4);7*1H2;/q;;;;;;;;+2/p-2
- Synonyms
- Zinc sulfate (ZnSO4) heptahydrate | Zinc sulfate (heptahydrate) | DTXCID8020175 | ZINCI SULFAS HEPTAHYDRATE [WHO-IP L...
Zinc acetate dihydrateCAS: 5970-45-6 EC Number: 209-170-2 PubChem CID: 2724192 Formula: C4H6O4Zn·2H2O Molecular Weight: 219.51puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥99%(KT)In Stock Item #: Z434660View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- zinc;diacetate;dihydrate
- SMILES
- CC(=O)[O-].CC(=O)[O-].O.O.[Zn+2]
- InChIKey
- BEAZKUGSCHFXIQ-UHFFFAOYSA-L
- InChI
- 1S/2C2H4O2.2H2O.Zn/c2*1-2(3)4;;;/h2*1H3,(H,3,4);2*1H2;/q;;;;+2/p-2
- Synonyms
- Octan zinecnaty [Czech] | Zinc (II) acetate dihydrate | Zinc acetate dihydrate ACS reagent grade | ZINC ACETATE DIHYD...
ZincPh.Eur. ? European Pharmacopoeia grade — conforms to Ph.Eur. monographs across EU member states. Use for pharmaceutical work needing European compendial compliance. puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. granularIn Stock Item #: Z434812View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- zinc
- SMILES
- [Zn]
- InChIKey
- HCHKCACWOHOZIP-UHFFFAOYSA-N
- InChI
- 1S/Zn
- Synonyms
- LS 2 | Zinc, purum, powder | Asarco L 15 | Zinc mossy | Zinc(1+) | zinc(1+) ion | Zinc ashes | Zinc shot | Zinc, 99.5...
Sodium phosphate monobasic monohydrateCAS: 10049-21-5 EC Number: 231-449-2 PubChem CID: 516949 Formula: NaH2PO4·H2O Molecular Weight: 137.99puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥99%(T)Out of Stock Item #: S431207View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- sodium;dihydrogen phosphate;hydrate
- SMILES
- O.OP(=O)(O)[O-].[Na+]
- InChIKey
- BBMHARZCALWXSL-UHFFFAOYSA-M
- InChI
- 1S/Na.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+1;;/p-1
- Synonyms
- AKOS015913977 | AKOS026674125 | SODIUM PHOSPHATE, MONOBASIC, MONOHYDRATE COMPONENT OF VISICOL | sodium dihydrogen pho...
Silver sulfatepuriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥99.5%Out of Stock Item #: S431273View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- disilver;sulfate
- SMILES
- [O-]S(=O)(=O)[O-].[Ag+].[Ag+]
- InChIKey
- YPNVIBVEFVRZPJ-UHFFFAOYSA-L
- InChI
- 1S/2Ag.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
- Synonyms
- Sulfate d'argent | silver (I) sulfate | YPNVIBVEFVRZPJ-UHFFFAOYSA-L | silver(I) sulphate | AG2SO4 | DISILVER MONOSULP...
Sodium hexanitrocobaltate(III)CAS: 13600-98-1 EC Number: 237-077-7 PubChem CID: 22836338 Formula: CoN6Na3O12 Molecular Weight: 403.94puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. for the determination of KOut of Stock Item #: S431989View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- trisodium;cobalt;hexanitrite
- SMILES
- N(=O)[O-].N(=O)[O-].N(=O)[O-].N(=O)[O-].N(=O)[O-].N(=O)[O-].[Na+].[Na+].[Na+].[Co]
- InChIKey
- MUTOTFDDGIZNIK-UHFFFAOYSA-H
- InChI
- 1S/Co.6HNO2.3Na/c;6*2-1-3;;;/h;6*(H,2,3);;;/q;;;;;;;3*+1/p-6
- Synonyms
- Sodium hexanitritocobaltate(III), Sodium cobaltnitrite
Sodium sulfiteSolid Anhydrous Grade ? Anhydrous grade — water removed and packaged dry for moisture-sensitive chemistry. Use in reactions where even trace water would interfere or quench. Ph.Eur. ? European Pharmacopoeia grade — conforms to Ph.Eur. monographs across EU member states. Use for pharmaceutical work needing European compendial compliance. puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ≥98%(iodometric)In Stock Item #: S433918View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- disodium;sulfite
- SMILES
- [O-]S(=O)[O-].[Na+].[Na+]
- InChIKey
- GEHJYWRUCIMESM-UHFFFAOYSA-L
- InChI
- 1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2
- Synonyms
- DTXSID2044260 | SODIUM SULFITE [INCI] | SODIUM SULFITE [VANDF] | SODIUM SULFITE (II) | D09002 | MFCD00003503 | Natrum...
Potassium iodidePh.Eur. ? European Pharmacopoeia grade — conforms to Ph.Eur. monographs across EU member states. Use for pharmaceutical work needing European compendial compliance. puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ≥99%In Stock Item #: P433787View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- potassium;iodide
- SMILES
- [K+].[I-]
- InChIKey
- NLKNQRATVPKPDG-UHFFFAOYSA-M
- InChI
- 1S/HI.K/h1H;/q;+1/p-1
- Synonyms
- Joptone | Potassium iodide, ultra dry | potassium iodide | Potassium iodide (K3I3) | POTASSIUM IODIDE [MART.] | Tox21...
Potassium hexacyanoferrate(III)Ph.Eur. ? European Pharmacopoeia grade — conforms to Ph.Eur. monographs across EU member states. Use for pharmaceutical work needing European compendial compliance. puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥99%Out of Stock Item #: P475683View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- tripotassium;iron(3+);hexacyanide
- SMILES
- [C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[C-]#N.[K+].[K+].[K+].[Fe+3]
- InChIKey
- BYGOPQKDHGXNCD-UHFFFAOYSA-N
- InChI
- 1S/6CN.Fe.3K/c6*1-2;;;;/q6*-1;+3;3*+1
- Synonyms
- EINECS 237-323-3 | Tripotassium ferric hexacyanide | Tripotassium ferricyanide | MIMJFNVDBPUTPB-UHFFFAOYSA-N | Ferrat...
Magnesium oxidepuriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity.Out of Stock Item #: M431746View ProductPricing & Pack SizesTechnical Identifiers
Mercury(II) iodide redSolid puriss. p.a. ? Puriss. pro analysi — very high purity suitable for analysis, meeting recognized analytical specs. Use for analytical work demanding certified high purity. ACS ? ACS grade — meets American Chemical Society specifications, the analytical benchmark in the US. Use for analytical and QC work needing ACS-defined purity. ≥99%(RT) redIn Stock Item #: M433990View ProductPricing & Pack SizesTechnical Identifiers
- IUPAC Name
- diiodomercury
- SMILES
- I[Hg]I
- InChIKey
- YFDLHELOZYVNJE-UHFFFAOYSA-L
- InChI
- 1S/Hg.2HI/h;2*1H/q+2;;/p-2
- Synonyms
- Mercury(II) iodide, ACS reagent, >=99.0% | CHEBI:49659 | HgI2 | Mercury(II) iodate, 99% | Mercury(II) iodide red, pur...
Frequently Asked Questions — puriss. p.a.
What does puriss. p.a. mean?
puriss. p.a. is a defined analytical purity tier suitable for general analytical and reagent applications. It specifies a minimum assay percentage, controlled limits on common impurities (water, heavy metals, residue on ignition), and lot-to-lot consistency. puriss. p.a. is one of several purity tiers — choose based on the sensitivity and regulatory requirements of your method.
When should I choose puriss. p.a. over a higher tier?
Choose puriss. p.a. for routine analytical work where the method tolerates the stated impurity limits. Move up to HPLC grade, UltraPureChrom™, or a pharmacopoeia grade (USP, BP, JP, ChP, Ph.Eur.) when your method demands tighter UV absorbance, trace metal limits, or regulated compendial documentation.
Is puriss. p.a. suitable for use as an HPLC mobile phase?
Not by default. Standard analytical purity tiers do not always meet UV absorbance and fluorescence specifications needed for HPLC. For chromatography, choose HPLC grade, HPLC Gradient Grade, or for HPLC plus. For LC-MS work, choose for LC-MS or for UHPLC-MS.
Does puriss. p.a. include a Certificate of Analysis?
Yes. Every lot of an analytical-grade reagent ships with a Certificate of Analysis listing tested specifications. SDS and additional documentation are available on the product page or by request.
What pack sizes are available?
Solid reagents are typically offered in 25 g, 100 g, 500 g and 1 kg units; liquids in 500 mL, 1 L, 2.5 L and 4 L. Bulk and custom packaging are available through the Bulk & Custom Quote workflow.